INTRODUCTORY ESSAY, 121 its plants has been made since the publication of Moon's in- efficient catalogue. Owing to the extent and impenetrability of the forests, some novelties must still remain; and many of the species, being large timber-trees and dioecious plants, vary- ing abundantly, require skilful analysis and observation in the country. We have already mentioned Burmann's and Lin- nseus's labours. Moon was the first English collector, and curator of the Government Botanical Gardens at Peradenia, near Kandy. His collections (according to Gardner, Lond. Journ. Bot. iv. 397) were extensive and good, and formed the foundation of the Peradenia Herbarium, which is now rapidly Acquiring a European fame, through the successive exertions of Gardner and Thwaites, Moon's successors in charge of the garden; and of Major Champion, who resided several years in the island. Moon's plants were never distributed; but other and most extensive collections have been, of which the follow- ing are the most important:—1. Macrae's, a collector in the service of the Horticultural Society of London.—2« Colonel and Mrs. Walker's: these were both extensive and excellent, and were illustrated by many drawings and manuscripts.—3. Major Champion's, alluded to at p. 69.—4. Mr. Gardner's; abundant and good: these were in part distributed, in part sold after his decease, while a part remain in the Peradenia Herbarium. Gardner has published several papers on Cey- lon plants in the ' Journal of Botany/ and in the ' Calcutta Journal of Natural History;' sometimes in conjunction with Major Champion. Mr. Thwaites, the present able superintendent of the Pera- denia Botanic Gardens, has for several years continued ener- getically the investigation of the flora of the island which was commenced by Mr. Gardner; bringing his great botanical acquirements, skill in analysis, and powers of observing and on artificial, winter is produced by exposing the roots, and bullocks* blood is used us manure. According to the smuo authority, the grape also bears well at TangHlle, at tlu> southern extremity of Ceylon, a. locality which must havt* u vt>»*y dilU'ivni climate from ilaifttn.